Fixed 'openstack-config' commands in compute nova.conf

Corrected section from 'DEFAULT' to 'keystone_authtoken' for the
following keys: auth_host, admin_user, admin_tenant_name,
admin_password

Added commands for the following keys: auth_protocol, auth_port

Change-Id: I31d388958d3756b35081d0d75825138dea2d6a64
Closes-Bug: #1262495
(cherry picked from commit 26205df980e703b3376768c8b2d718da29c4a655)
Removes wildcard entry for mysql permissions

backport:havana

Change-Id: I2c199d0d7afdd53f6e91e43b77020aca54aa5655
Closes-bug: #1252267
(cherry picked from commit 809b7b1be0df547b1ea984c6b4c0021038709344)
Merge "Fixed 'openstack-config' commands in compute nova.conf" into stable/havana
Merge "Removes wildcard entry for mysql permissions" into stable/havana